A developing Colorado low will gather strength as it moves across the U.S. Midwest over the next couple of days.

The system is expected to move into Ontario on Thursday night into Friday and continuing through the weekend.

For areas near Lake Superior 15 centimeters of snow or more is possible on Saturday with blowing snow. The heaviest snow is expected Friday and Friday night

The system will finally clear out of Ontario on Monday at which point it will become a big weather-maker for Eastern Canada with everything from strong winds, heavy rain, and even some snowfall expected.